Again, Obama created the conditions that we are currently in. He overhauled DHS and ICE, ballooned their headcount and budget, created the policy framework to allow them to be deployed in cities around the country, and appointed Homan as the head of it all. Under Obama, 3M people were deported. Under Trump, he just hit 1.5M. And Homan was Trump's deportation czar for BOTH of his terms.
And again, Biden participated in the policy creation under Obama, and when he saw what Trump was doing, he took office and did NOTHING to change the policies. All he did was use his prerogative to not deploy them in this manner. He LITERALLY saw Trump with a knife and shrugged.